The forth wire is to ground the body of the dryer. The cord should have red, black, white, and green wires. Red and black are hot, the white is neutral, and green is ground. The red, white, black in that order or reversed, black white, red, should go in a row where they connect to the dryer with the green one probably above it. If the center neutral lug has a bond to the chassis remove it. You have a dedicated wire to replace it now.
No. Not in a safe manner.
MAINS ELECTRICITY IS VERY DANGEROUSELECTRICITY CAN KILL YOU IF YOU DON'T REALLY KNOW WHAT YOU ARE DOING=IF YOU ARE NOT SURE YOU CAN DO THIS JOB SAFELY YOU MUST CALL IN A LICENSED ELECTRICIAN TO DO IT FOR YOU.=
Major General Philip Schuler was in command of the Northern Division of the Continental Army in 1776. He spent time at his home in Albany NY planning a counteroffensive to the British "3Prong Attack" plan that would have divided the colonies.
427cm